class_docstr: A type-safe wrapper for a list of quantile forecasts, stored as NumPy
  arrays.
class_docstr_tok: ["A","type-safe","wrapper","for","a","list","of","quantile","forecasts",",","stored","as","NumPy","arrays","."]
code: def __len__(self) -> int:
      return self.values.shape[0]
  
file_path: gluonts/src/gluonts/nursery/tsbench/src/tsbench/forecasts/quantile.py
imports: from __future__ import annotations
  from dataclasses import dataclass
  from pathlib import Path
  from typing import List
  import numpy
  import numpy.typing
  import pandas
  from gluonts.model.forecast import QuantileForecast
  from gluonts.time_feature import get_seasonality
label_desc: Use image node_id 5 for calling the QuantileForecasts obj's underlying member method code with example usage: obj.__len__() and returns: self